Meiosis Quiz

The production of egg and sperm cells is necessary for sexual reproduction because —

• it increases the number of chromosomes so that the gametes can combine, giving the organism a complete set of chromosomes

• it increases the number of developing offspring

• it decreases the number of developing offspring

• it reduces the number of chromosomes so the gametes can combine, giving the organism a complete set of chromosomes

Which of the following best describes the process that diagram 2 represents?

• cell division that occurs in reproductive structures of an organism

• cell division that occurs in the repair process of damaged skin cells

• occurs in all cells of the body system

• process prior to the first stage of cell division

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The greatest amount of genetic variation occurs in offspring that reproduce —

• sexually through fission

• sexually through meiosis

• asexually through mitosis

• asexually through budding

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The steps of crossing over during meiosis are shown in the diagram. What is the significance of crossing over in Meiosis I?

• Crossing over ensures that the four daughter cells produced at the end of Meiosis II have the original number of chromosomes in each cell.

• Crossing over ensures that the two daughter cells produced at the end of Meiosis I have half the original number of chromosomes in each cell.

• Crossing over ensures that the same combination of alleles remains in each of the four daughter cells at the end of Meiosis II.

• Crossing over ensures that the chromosomes in the four daughter cells produced at the end of Meiosis II will have a different assortment of genes than the corresponding chromosomes in the original cell.

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Which of the following could result if meiosis did not occur in the process of sexual reproduction?

• Chromosomes would no longer contain genetic information.

• Chromosome number would increase with each generation.

• Chromosomes would not be copied exactly.

• Chromosome number would decrease with each generation.

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There are a total of _______ chromosomes in human sperm or egg cells.

• 2

• 23

• 46

• 92

There are _______ cells produced in meiosis.

• 2

• 4

• 1

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A cell has 16 chromosomes. After meiosis, how many chromosomes will the daughter cells have?

• 32

• 16

• 8

A diploid cell has 12 chromosomes. How many chromosomes does the haploid cell of that organism have?

• 6

• 12

• 24

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A tree has 44 chromosomes in its gametes. How many chromosomes would the leaf/somatic cells have?

• 22

• 44

• 88